Drag the name of the type of mining into the box next to the correct description. One name will not be used. a technique that used a trough to separate gold from gravel a type of mining in which minerals were found in loose sand and gravel a technique that involved digging tunnels along the veins of gold and breaking up tons of ore a type of mining that used water under high pressure to blast away dirt, exposing the minerals underneath

1. Sluicing.

2. Placer mining.

3. Hard rock mining.

4. Hydraulic mining.

Explanation:

Mining can be defined as the process of extracting mineral resources from the Earth's surface such as seem, placer, ore-body, vein etc. Some examples of minerals that can be mined are gravel, gold, chalk, petroleum, limestone, coal, potash, rock salt etc.

The various techniques used for mining includes the following;

1. Sluicing: a technique that used a trough to separate gold from gravel.

2. Placer mining: a type of mining in which minerals were found in loose sand and gravel.

3. Hard rock mining: a technique that involved digging tunnels along the veins of gold and breaking up tons of ore.

4. Hydraulic mining: a type of mining that used water under high pressure to blast away dirt, exposing the minerals underneath.

it made them more prductive and efficent but with the change of polcies less and les got into the navy

the safahids used force when persuasion to convert from being a sunni muslim to embrace shi'ism was not effective. they also persecute shi'ites who have different views from their imposed teachings.